All of the species in the first two columns below were recognized and described by Gentry in 1992.[6] Listed in the third column are species names that have been used recently, but were not accepted by Gentry. The currently accepted synonym for each is in parentheses.

Tabebuia is distinguished from Handroanthus by wood that is not especially hard or heavy, and not abruptly divided into heartwood and sapwood. Lapachol is absent. Scales are present, but no hair. The calyx is usually spathaceous in Tabebuia, but never so in Handroanthus. Only two species of Tabebuia are yellow-flowered, but most species of Handroanthus are.

Unlike Roseodendron, the calyx of Tabebuia is always distinctly harder and thicker than the corolla. Tabebuia always has a dichotomously branched inflorescence; never a central rachis as in Roseodendron. Some species of Tabebuia have ribbed fruit, but not as conspicuously so as the two species of Roseodendron.

The wood of Tabebuia is light to medium in weight. Tabebuia rosea (including T. pentaphylla) is an important timber tree of tropical America.[9]Tabebuia heterophylla and Tabebuia angustata are the most important timber trees of some of the Caribbean islands. Their wood is of medium weight and is exceptionally durable in contact with salt water.[10]

The swamp species of Tabebuia have wood that is unusually light in weight. The most prominent example of these is Tabebuia cassinoides. Its roots produce a soft and spongy wood that is used for floats, razor straps, and the inner soles of shoes.[10]

In spite of its use for lumber, Tabebuia is best known as an ornamental flowering tree. Tabebuia aurea, Tabebuia rosea, Tabebuia pallida, Tabebuia berteroi, and Tabebuia heterophylla are cultivated throughout the tropics for their showy flowers.[5]Tabebuia dubia, Tabebuia haemantha, Tabebuia obtusifolia, Tabebuia nodosa, and Tabebuia roseo-alba are also known in cultivation and are sometimes locally abundant.[11]

Tabebuia heteropoda, Tabebuia incana, and other species are occasionally used as an additive to the entheogenic drink Ayahuasca.[13]

Pau d'arco is promoted as a treatment for a number of human ailments, including cancer. According to the American Cancer Society, "available evidence from well-designed, controlled studies does not support this substance as an effective treatment for cancer in humans", and using it risks harmful side-effects.[14]

Handroanthus was established by Joáo Rodrigues de Mattos in 1970.[24] Gentry did not agree with the segregation of Handroanthus from Tabebuia and warned against "succumbing to further paroxysms of unwarranted splitting".[25] In 1992, Gentry published a revision of Tabebuia in Flora Neotropica, in which he described 99 species and 1 hybrid, including those species placed by some authors in Roseodendron or Handroanthus.[6] Gentry divided Tabebuia into 10 "species groups", some of them intentionally artificial. Tabebuia, as currently circumscribed, consists of groups 2,6,7,8,9, and 10. Group 1 is now the genus Roseodendron. Groups 3,4, and 5 compose the genus Handroanthus.

Roseodendron was resolved as sister to a clade consisting of Handroanthus and four other genera. This result had only weak statistical support, but Roseodendron clearly did not group with the remainder of Tabebuia. Consequently, Roseodendron was resurrected in its original form.[7] The remaining 67 species of Tabebuia formed a strongly supported clade that is sister to Ekmanianthe, a genus of two species from Cuba and Hispaniola. Tabebuia had been traditionally placed in the tribeTecomeae, but that tribe is now defined much more narrowly than it had been, and it now excludes Tabebuia.[26]Tabebuia is now one of 12 to 14 genera belonging to a group that is informally called the Tabebuiaalliance. This group has not been placed at any particular taxonomic rank.

Explosion doesn't describe the blossoming of yellow trees all around Central Florida. The trees, called tabebuia, erupt in a supernova of yellow more dazzling than lemons, crime tape or traffic signals before red. So startling is the presentation it ...

The tabebuia tree is one of the approved tree types that the City gives out each year at Arbor Day. They're fairly drought tolerant, prefer full sun and again … that flower. The City also has a program for homeowners where residents can have a tree ...

On Wednesday, in two unanimous votes, the council endorsed a site plan and special exception needed to move forward with park improvements that include adding tabebuia trees to each side of Memorial Fountain, replacing tall Royal Palms with shorter ...

Residents also have the chance to choose the species of their tree, choosing between Live Oak, Tabebuia, Sweet Gum, Magnolia Grandiflora, Red Bud, Cypress and Chaste trees. Other species can be requested, but have to be approved by the city.

Î²-Lapachone (Î²-LAP) is a natural naphthoquinone compound isolated from the lapacho tree (Tabebuia sp.), and it has been used for treatment of rheumatoid arthritis, infection, and cancer. In the present study, we investigated whether Î²-LAP has ...

Matter of concern. Some trees have skipped or delayed their blooming cycle this year due to indiscriminate chopping of. Tabebuia trees, which mark the onset of summer in Bangalore with their blooming flowers, are limited this time. Further, some trees ...

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